Ring-joint machine



Filed May 6, 1929 2 Shuts-Sheet 1 I 75 ENT'OR ATTORNEYS y 51 11 w. L. EVANS 1,770,881

. RING JOINT MACHINE 47 /g 1 I z! 4 44a 44a 6 a7 a5 1 4 Z3 .36

1" O I i /z i 15 l 1 A i g m I I aiimiium ATTORNEYS 7 To limitlthe lower end to concentrate the suction around The shavings are dis-- the cutting teeth. charged through a side opening '34 and a short conduit through which they are blown away from the operator. The lower end of the hood is flanged and has a series of pointed pins adapted to stick into andgrip the work, while a groove is being cut. The upper end of the hood is secured to a flanged,

cover 37 conveniently by means ofscrews 38 extending through narrow portions of slots 39, the arrangement being such that the screws maybe loosened and the hood turned slightly to permit the screw heads to pass through the enlarged holes. Hence, the hood can be easily and quickly removed to afford access to the cutter.

heir the cutter is in its uppermost position or out of engagement with the work, the lower end of the hood extends below the ends of the cutter teeth. It is supported for sliding movement on the cutter shaft and incidentally prevented from rotating by means of rods 10 screwed into bosses 41 on the cover and locked'by .jam nuts 48, eachrod, extend ing through a pair of alined openings in lugs or ears 4% on the housing 20 and having a nut above the upper ear to. act as:an adjustable limiting stop. In the 7 present example, a sleeve l5-is threaded on each rod and extends through the hole in the lower ear, providing a spring abutment fora small" compression spring. surrounding the rod between said abutment and the lower face of the upper lug. The sleeves are adjustable to vary the compression of said springs, thereby regulatingtlie necessary plGSSllIQ'Of the shaving head on the work, while being cut, so that the workwill not slip or kick out when the cutter strikes it. v downward movement of the cutter, there is shownan adjustable stop member d6 in the form of a headed screw threaded into a lug 47 on the lower end of the housing and held properly adjusted by a nut; The arrangementis sucli that the lower end of the stop member strikes the'hood cover and positively prevents further down- Y ward movement. This is 'important because ring grooves are often cut in relatively thin stock and must not cut through the face side.

Frequently, however, the grooveis cut to within a fraction of an inch of the face side.

To feed the cutterv into .the work, after it is properly alined, a foot treadle or lever 48 is pivotally-mounted on the upstanding ears 49 on the base and a'link or rod 50 is pivoted to the lever and extends through a flared opening in an arm 51 on the bracket 16. A nut 52 having a rounded portion is screwed on the upper end of the link and is seated in a countersunk seat in the arm, the arrangement being such that the turret may swing partially around without bending the rod. The foot lever is preferably guided by a vertical fork 53 also on the base 11. Downward pressure on the treadle will lower the whole turret against the compression of the large spring'l? and feed the cutter until the stop screw strikes the hood cover.

In the present example, the ring assembling mechanism is connected by reduction gearing to be driven by the cutter shaft to apply great pressure to the rings. Herein, a worm 15a secured to the cutter shaft between'the bearings 23 and 24 and meshes with a worm-gear 55 within the gear casing 21. The casing is shown ashaving a removable front cover plate 56 and the worm gear is fixed on a shaft 57 journaled in the opposite faces of the casing.

@11 the front end-of the shaft is shown a crankpin 58 to which is pivoted a hand lever 59 having an integral arm 60 acting as one link of a toggle. This arm is pivotally connected to the upper ends of a pair of links 61 which are also pivotally connected to the upper end of a ram bar 62 guided to reciprocate vertically in a bearing 68 integral. with the casing 21. The lower end of the bar is shown as being reduced and screw threaded and a cup-shaped ram 64: of a slightly larger internal diameterthan the bosses formed by the cutter, is screwed on the bar and held in adjusted position by a jam nut 65. At the upper end of the screw. threaded portion is shown a nut 66 which acts as a stop shoulder to abut the lower end of the guide bearing 63.

As shown in Fig. 1, a light coil spring 67 is preferably connected to the lever 59 normally to hold it and the ram in raised position. Thecrank is free to rotate, and rock the lever without Op rating the ram. Now itwill he understood that the lever isadaptedto be operated initially to lower the rain by moving the links. 60 and 61 until they are almost but not quite in alinement with the rain and are then in position for the crank to exert pressure on the ra n. In Fig. 2, the rain is shown at the lower end of its s'troke'with the leverpulled down, the pressure being applied to the ram by the crank.

The constructionand arrangement of the toggle arms or linksare such that the ram can kickback if a ring strikes the bottom of its channel before the crank reachesthe lower end of its stroke. VBeferring to Fig. 5, the

arms are prevented from straightening in line with the ram bar by means of a cross bar 68 connecting thetwo links 61 and a flat end of the arm 60 to. the right of the Hill ltlh I bracket and feed the cutter intothe work; and a lever connected to lower theram to operative position overthe work- I '10. A ring joint 'inachine comprising, in combination, a work table; a column above the work table; a bracketon the column; a groove cutter and a ring assembling ram carried by the bracket; and means to lower said cutter and ram to engage the work.

11. A ring joint machine comprising, in combination, a base; a vertical column on the base; a. work table adjustably supported on the column; a turret swingably and slidably mounted on the column-above the work table; a groove-.7 cutter and ring assembling ram on said turret; a motor on the turret directly connected to the shaft; and power delivering connections between the cutter shaft and the ring assembling ram.

12. A ring joint'machiue comprising, in combination, a frame having a verticalcolumn; a work table adjustably supported-Ion the column; a turretslidably and rotatably mounted on thecolumn. above the work table;

a spring surrounding thecolumn and normally supporting the turret in inactive posi; tion; a groove cutter and a ring assembling ram on said turret; a motor operatively connected to both the cutter and ram; a lever to lower the turret against the resistance of said spring to-feed the cutter into the work; and manual means initially to lower the ram.

13. A ring joint machine comprising, in combination, a frame having a vertical column; a work table adjustably supported on thecolumn; a turret slidably and rotatably mounted on the column abovethe work table; a spring surrounding thecolumn and normally supporting the turret in inactive position; a groove cutterand a ring assembling ram on said turret; a motor operatively connected to both the cutter and ram a lever to lower the turret against the resistance of said spring to feedthe cutterinto the work; and manual means initially'to lower the ram to operative position including a toggle joint and a hand lever connected'toone of the V toggle links.

' MJA ring jointmachine comprising, in combination, a base; a vertical column on the base a work table on the column; a slidably mounted turret on the column above thetable having a vertical shaft housing and av gear casing therein; .a cuttershaft journaledin said housing; a groove'cutter on the shaft;

, a worm on the cut-tershaft; a worm gear in the gearcasing vmeshing with the worm; a

crank on the worm gearshaft; a verticalring assemblingram slidably. supported by the gear casing; toggle links connecting the-upper end of said ram to said crank; and a lever ,operatively connected to said toggle links initially to lower the ram. 1

. 15. A ring joint machine comprising, in

combination, abase; a vertical column on the gear casing meshing with the worm; a

crank onthe worm gear shaft; a vertical ring assembling ram slidably supported by the gear casing; toggle links connecting the upper end of saidram to said crank; a motor mounted above the shaft housingand directly connected to drive said cutter shaft; and a lever operatively connected to said toggl links initially'to lower the ram.

16. 'A-ring joint'machine comprising, in combination, a base; a. vertical column on the base; a-work table on the column; a slid ably mounted turret on the column above the table having a vertical shaft housing and a gear casing therein; a cutter shaft j ournaled in said housing; a groove cutter on the shaft; aworm on the cutter shaft; a worm gear in the gear casing meshing with the worm; a. crank on the worm gear shaft a vertical ring assembling ram slidably supported by the gear casing;-toggle links connecting the upper endof said ram to said crank; a lever integral with one of the toggle links initially to lower the ram; and means to prevent the links from being straightened whereby the joint may yield when the ram forces a ring to the bottom'of its groove.

17. In a ring oint machine of the character described, a work table; a groove cutter above the work table; a vertical shaft for the cutter; a shaving hood slidably mounted on the shaft and housing the cutter; and means associated with the hood to discharge shavin s. I

18. 11a ring joint machine of the character described, a. work table; a groove cutter above the'work table; a vertical shaft for the cutter; a shaving. hood slidably mounted on the shaft and housing the cutter; and a fan associated with the hood to discharge shavingstherefrom.

19. Ina ring oint machlne of the character described, a work table; a groovecutter above the work table; a vertical shaft for the cutter; a shaving hood slidably mounted on the'shaft and normally housing said cutter,

said hood being adapted to engage the work when the cutteris lowered; and an adj ustablestop member cooperating with the upper end of the hood to limit the feeding movement of above the table; a cutter shaft housing for the cutter shaft a shaving hood slidably mounted on the cutter shaft; slidable spring urged' rods supporting said shaving hood from said housing and preventing the hood from rotating with the cutter shaft; and a screw threaded stop gage projecting below the shaft housing and adapted to strike the top of the hood when the cutter is fed into the work.

21. In a ring joint machine, a vertically 1 V movable groove cutter; a shaving hood slidably and removably mounted on the cutter shaft and surrounding the cutter, the lower 7 end of the hood being adapted to engage the Work and having a reduced portion around the cutter; a fan on the cutter shaft Within the hood; and a discharge conduit on the side of the hood.

22. In a ring joint machine of the class described, a Work table; a ringassembling ram 7 above the work table; a power-driven crank above the ram; toggle links connecting the crank to the ram; and a hand lever connected to one of the links. r

23. In a ring joint machine oflthe'class described, a Worktable; a ring assembling 'ram above the worktable; a power-driven,

crank above the ram;"toggle links connecting the crank to the ram; a hand lever connected to one ofthe links; and a beveled end onone of the links to prevent them from straightening and to permit them to yield when the ram forces a ring into the bottom of the groove.

24. In a ring joint machine, a work table;

a verticalcolumn extending above'the table; I a cutter and ram turret swingably and slidably mounted on the column; a stop segment for the turret on the column; and a springurged latch plate on the turret cooperating with the segment.

25. In a ring joint machine, a groovecutteradapted to produce a ring-receivingboss v in the work; a small drill associated with the cutter to make a hole in the center of the boss; a frusto-conical guide block having a guide pin projectingfrom the center of the base to be inserted in said opening, said guide block also having a groove in its guiding surface to accommodate an enlarged welded portion of a ring; and a ram to force the ring over the block and the boss. 7

26. In a machine of the character described, a work support; a rotary. cutter arranged to be fed into the work on the support; a yieldably mounted shaving hood sure rounding the cutter and arranged to be moved into engagement withthe work as the cutter is fed into it; and pointed projections on the hood yieldably to stick into and grlp the work whereby to prevent displacement of the Work while the cutter is operating.

In testimony, that I claim the foregoing as my own, I have hereto aflixed my signature.

WILLIAM LEWIS EVANS. 

